The 2018 edition of the Scott Standard Postage Stamp Catalogue celebrates the 150th anniversary of the Scott catalogs. The title pages of this volume and other volumes in the 2018 Scott Standard catalog state that this is the 174th edition of the catalogs (and it is). In September 1868, John Walter Scott published his first stamp catalog. The catalog, titled A Descriptive Catalogue of America and Foreign Postage Stamps, Issued from 1840 to Date, is considered to be the first Scott stamp catalog